Disk plow



A 0 9 1 5 N A J E N E. T A P 7. W m @P K BE D a 4 9 A: 7 m N APPLICATIONFILED AUG. 30, 1902.

2 SHEETS-SHEET 1.

N0 MODEL.

QLCEZZzIson/Q amwm Am C O O my M a W No. 749,043. PATENTED JAN. 5, 1904.

0. E. ELLISON.

DISK PLOW.

. APPLICATION FILED AUG. 30, 1902. N0 MODEL 2 SHEETS-SHEET 2.

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UNITED STATES Patented January 5, 1904.

PATENT OFFICE.

OLIVER E. ELLISON, OF OHATTANOOGA, TENNESSEE, ASSIGNOR OF ONE- HALF TOERNEST PRENTICE AND JOEL N. MCOUTOHEON, OF CHAT- TANOOGA, TENNESSEE.

DISK PLOW.

SPECIFICATION formingpart of Letters Patent No. 749,043, dated January5, 1904. Application filed August 30, 1902. Serial No. 121,642. (Nomodel.)

To all whom, it may concern:

Be it known that I, OLIVER E. ELLISON, a citizen of the United States,residing at Chattan ooga, in the county of Hamilton and State ofTennessee, have invented a new and useful Disk Plow, of which thefollowing is a specification.

This invention relates to a novel disk plow, the objects being tosimplify the construction, to lighten the draft, and to facilitate theadjustment of the parts in accordance with the character of the groundto be worked.

The invention also has for its objects to eliminate the usual framestructure, to provide for the reversal of" the plow, and to makeprovision for the proper retention of the draftbar in rigid positionwhen the plow is turned either to the right or left. Subordinate tothese objects are others which will appear during the course of thesucceeding description of that embodiment of the invention which for thepurpose of this disclosure is illustrated in the accompanying drawingsand succinctlydefined in the appended claims.

In said drawings, Figure 1' is aside elevation of my plow complete,showing the front disk moved down to its operative position and the reardisk elevated out of contact with the ground. Fig. 2 is a plan view ofthe subject-matter of Fig. 1. Fig. 3 is a detail perspective View of thedisk, beam, or carrier. Fig. 4 is a similar view of the journal-box ofthe front furrow-wheel. Fig. 5 is a detail view of one of the plates ofthe gooseneck. Fig. 6 is a detail View of a disk carried by a disk beamof single form, and Fig. 7 is a detail view of the beam shown in Fig. 6.

Like characters of reference are employed to designate correspondingparts throughout the several views. 7

The axle 1, located at the rear end of the machine, supports the driversseat 2, as usual, and is carried by the back furrowwheel 3 and theland-wheel 4. The wheel 3 is carried directly by the axle 1 and rotatesthereon; but the land-wheel 4, which is somewhat smaller than the wheel3, is carried by a short crank-axle 5, extended into the adjacent end ofthe axle 1 and designed to be swung by a land-wheel lever 6, for thepurneck 12, preferably comprising a pair of coincident plates bolted tothe tongue, as shown in Figs. 1 and 2, and formed with two series ofopenings 13 and 14, disposed at the right and left sides of the line ofdraft for the attachment of the clevis or other device, through themedium of which the draft-animals are attached to the plow.

The pivotal connection between the rear end of the tongue 11 and thefront end of the frame 9 is effected by a king-bolt 14*, which alsopasses through the attaching-plate 15 of a journal-box 16, said platebeing rigidly secured to the tongue 11, as by bolts 17, and formed withan offset 18 for the accommodation of the adjacent end of the frame. Itwill therefore be observed (see Fig. 1) that the front end of the frame9 will have swiveled connection with the tongue and will lie between therear end of the latter and the subjacent portion of the attachingplate15 of the journal-box. The plate 15 is extended to the rear of theking-bolt 14 and is provided with oppositely-disposed lateral lugs 19and 20, provided with openings, one of which is designed to receive apin 21, which bears against one side or the other of the frame, for thepurpose of preventing the swinging of the tongue during the turning ofthe plow in a manner to be hereinafter described.

The front furrow-wheel 22 is preferably somewhat smaller than the backfurrowwheel 3 and is mounted on a short crankaxle 23, the upperhorizontal end 24 of which isjo'urnaledinthejournal-box 16. Thecrankaxle23 is designed to be adjusted longitudinally for the purpose ofeffecting the lateral adj ustmeut of the front furrow-wheel 22, or

said axle may be swung in an obvious mannor for the purpose of properlyleveling the frame 9. The axle 23 may be retained in its adjustedpositions by any suitable means; but, as shown in Fig. 1, I prefer toemploy a set-screw 25, secured in the journal-box l6 and bearing againstthe axle.

We now come to consider a most important feature of the invention-towit., the construction and arrangement of the disks and the manner. ofmounting and adjusting the same. The disk beam or carrier 26 is carrieddirectly by the axle 1, which latter is received within a bearing-sleeve27, formed intermediate of the ends of the beam. The beam is thus freeto rock upon the main axle of the machine and is provided at itsopposite ends with angularly-disposed journal-boxes 2S and 29 for thereception of the stud-shafts 30 and 31 of the reversed disks 32 and 33.The front disk 32 is so disposed with respect to the line of draft thatthe furrow will be turned to the right, while the disk 33 has anopposite angular disposition to turn the furrow to the left. Ittherefore follows that by rocking the disk beam upon the main axle 1,either disk will be thrown into the ground and the other elevated to aninoperative position. This movement of the beam is produced by means ofa disk-operating lever 34:,preferably of hellcrank form, fulcrumed upona bracket 35, upstanding from the frame and having its short horizontalarm connected by a link 36 to the beam 26 at a point in advance of theaxle. For the purpose of retaining the lever 34 in its adjustedpositions it is provided with a spring-latch 37, disposed to engage atoothed segment or rack 38, upstanding from and rigidly secured to theframe, asindicated in Figs. 1 and 2. In Fig. 1 I have shown the diskbeam 26 in position to present the front disk 32 to the ground and tosustain the rear disk 33 in an inoperative position. Obviously, however,the lever 34 may be swung back for the purpose of rocking the beam 26 toraise the front disk 32 out of the ground and to present the rear disk33 for use if a reversal of the plow is desired, or the lever may beadjusted to so position the beam 26 that both disks will be raised abovethe ground, and thus rendered inoperative to facilitate thetransportation of the plow from one point of use to another. The disksare provided with suitable scrapers 39 and 40, (see Fig. 1,) the scraper39 being rigidly secured to that portion of the frame which is deflectedfor the accommodation of the disk 32, and the scraper 40 beingpreferably bolted to the securing bracket of the journal-box 29.

The elimination of the usual frame structure renders a plow constructedin accordance with my invention exceedingly light, and there istherefore very little weight to assist in the depression of the disks.For

this reason the opposite ends of the beam 26 are given a downwardinclination to dispose the axis of a depressed disk in a horizontalplane below the axis of the beam. (See Fig. 1.) The result of thisrelation of the parts is that the resistance opposed by the disk to theforward movement of the plow will tend to swing the beam, and thus throwthe disk into the ground.

Briefly, the operation of the plow is as follows: The draft-animals areattached to the gooseneck at the front end of the tongue 11. If the turnat the end of the furrow is to be made to the left, the attachment iseffected slightly to the right of the line of draft by means of one ofthe openings 13, and the pin 21 is inserted in the lug 20. The beam 26is then rocked, by means of the lever 34, to present the disk 32to theground, and as the plow traverses the field the furrow will be turned tothe right. When the end of the furrow is reached, the team will beturned to the left, and the tongue 11 will be held in rigid alinementwith the frame by the contact of the pin 21 with the left-hand side ofsaid frame in rear of the king-bolt 14. If now it is desired to have allthe furrows turned in the same direction, the beam 26 is rocked to raisethe disk 32 out of the ground and to present the disk 33 in operativeposition. The plow will now travel in the reverse direction across thefield, and the disk 33 will turn the furrow in the same direction thatthe preceding furrow was turned by the disk 32. If, as is usually thecase, it is desired to maintain the flexibility between the frame 9 andthe tongue 11, except when making a turn, the pin 21 may be removedentirely and only inserted at such time as a turn is to be made, when,as is obvious, it will be disposed at one side or the other of theframe, accordingly as the turn is to be made to the right or left.

While the reversible form of plow shown in Figs. 1 and 2 is preferable,a beam 26 of single form, such as is shown in Figs. 6 and 7, may besubstituted for the beam 26. The beam 26 is provided at its front endwith a disk 32 and is formed at its rear end with a bearing-sleeve 27for the reception of the main axle '1 of the plow.

It is thought that from the foregoing the construction and operation ofmy novel disk plow will be clearly apparent; but while the illustratedembodiment of the invention is believed at this time to be preferable Iwish to be distinctly understood as reserving to myself the right toelfect such changes, modifications, and variations of the illustratedstructure as maybe properly embraced within the scope of the protectionprayed.

What I claim is-- 1. Inadisk plow, thecombination with an axle supportedby wheels at the opposite ends thereof, of a frame having the form of asingle bar extending forwardly from the axle adjacent to one of thewheels, and a rocking disk-carrying beam mounted on the axle between theframe-bar and the adjacent wheel.

IIO

2. Ina disk plow, the combination with an axle, and a frame having theform of a single bar extending therefrom, .of a land-wheel andfurrow-wheels supporting the frame and axle, a disk beam mounted toswing from the axle, a disk carried by the beam, and means for swingingthe beam to raise and lower the disk;

3. In adisk plow, the combination with the axle, of land and furrowwheels supporting the same, a frame having the form of a single barextending from the axle adjacent to the furrow-wheel, a disk beammounted to swing from the axle between the frame and the furrow-wheel, adisk carried by the beam, and means carried by the frame for swingingthe beam and for retaining the same in its adjusted positions.

4. In a disk plow, the combination with the axle,of land andfurrowwheels supportingthe same, a single frame-bar extending from theaxle adjacent to the fu rroW-wheel and formed with a laterally-deflectedportion, a disk beam mounted to swing from the axle, a disk carried bythe beam and extending into the deflected portion of the frame, a leverfulcrumed upon the frameand connected to the beam to swing the same, anda latch for retaining the lever in its adjusted position.

5. In a disk plow, the combination with the axle, and a single frame-barextending forwardly therefrom, of a land-wheel and furrow-wheelssupporting the frame and axle, a rocking beam mounted intermediate ofits ends upon the axle between the frame and the furrow-wheel,reversely-disposed disks carried by the beam at opposite sides of theaxle for alternate presentation to the ground through the rocking of thebeam, and means carried by the frame for adjusting the beam.

6. In adisk plow, the combination with the axle, and a frame-barextending forwardly from the axle adjacent to one end thereof and formedwith a laterally-deflected portion, of a rocking beam mounted on theaxle between the frame-bar and the adjacent end of said axle,reversely-disposed disks at the opposite ends of the rocking beam, oneof said disks being extended into the deflected poriion of theframe-bar, scrapers arranged to scrape the disks and carried by the beamand frame respectively, means for adjusting the rocking beam to presenteither of the disks to the ground, and land and furrow wheels supportingthe frame and axle.

7. In a disk plow, the combination with the axle, frame, land-wheel, andfurrow-wheels, of a pair of reversely-disposed disks, a carrier commonto said disks and movable independently of the frame to present eitherdisk to the ground, and means carried by the frame for adjusting andretaining the carrier.

8. In a disk plow, the combination with an axle, a back furrow-wheelmounted at one end thereof, a land-wheel adj ustably mounted at theopposite end thereof, and a drivers seat supported by the axle betweenthe wheels, of a frame secured at its rear end to the axle adjacent tothe back furr0w-wheel and having a laterally-deflected portion, a beamhaving a sleeve rotatable upon the axle, a disk supported at the end ofthe beam and extending into the deflected portion of the frame, a levermounted on the frame for adjusting the position of the beam,and afrontfurrow-wheel adjustably supporting the front end of the frame.

9. In a disk plow, the combination with an axle, a back furrow-wheelmounted at one end of the axle, a short crank-axle adjustably securedtothe opposite end of the main axle, a land-wheel carried thereby, a leverfor adjusting the crank-axle, and a drivers seat supported by the mainaxle intermediate of the ends thereof, of a frame secured at its rearend to the axle adjacent to the back furrow-wheel, a rocking beammounted intermediate of its ends upon the axle and disposed adjacent tothe frame, reversely-disposed disks supported by the opposite ends ofthe beam, a lever supported by the frame adjacent to the main axle andconnected to the beam to rock the same, a latch and rack for retainingthe lever in its adjusted positions, a tongue pivoted to the front endof the frame, a journal-box rigid with said tongue, a crank-axlesupported by the box, and a front furrow-wheel mounted on saidlast-named crank-axle.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

OLIVER E. ELLISON.

Witnesses:

E. J. DILLARS, J. W. JOHNSON.

